6 * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
30 #define FLASH_BANK_SIZE 0x400000
31 #define MAIN_SECT_SIZE 0x20000
33 flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
36 /*-----------------------------------------------------------------------
39 ulong flash_init (void)
44 for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) {
47 flash_info[i].flash_id =
48 (INTEL_MANUFACT & FLASH_VENDMASK) |
49 (INTEL_ID_28F128J3 & FLASH_TYPEMASK);
50 flash_info[i].size = FLASH_BANK_SIZE;
51 flash_info[i].sector_count = CFG_MAX_FLASH_SECT;
52 memset (flash_info[i].protect, 0, CFG_MAX_FLASH_SECT);
55 flashbase = PHYS_FLASH_1;
58 flashbase = PHYS_FLASH_2;
61 panic ("configured too many flash banks!\n");
64 for (j = 0; j < flash_info[i].sector_count; j++) {
65 flash_info[i].start[j] =
66 flashbase + j * MAIN_SECT_SIZE;
68 size += flash_info[i].size;
71 /* Protect monitor and environment sectors
73 flash_protect (FLAG_PROTECT_SET,
75 CFG_FLASH_BASE + monitor_flash_len - 1,
78 flash_protect (FLAG_PROTECT_SET,
80 CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
85 /*-----------------------------------------------------------------------
87 void flash_print_info (flash_info_t * info)
91 for (j = 0; j < CFG_MAX_FLASH_BANKS; j++) {
92 switch (info->flash_id & FLASH_VENDMASK) {
93 case (INTEL_MANUFACT & FLASH_VENDMASK):
97 printf ("Unknown Vendor ");
101 switch (info->flash_id & FLASH_TYPEMASK) {
102 case (INTEL_ID_28F320J3A & FLASH_TYPEMASK):
103 printf ("28F320J3A (32Mbit)\n");
105 case (INTEL_ID_28F128J3 & FLASH_TYPEMASK):
106 printf ("28F128J3 (128Mbit)\n");
109 printf ("Unknown Chip Type\n");
114 printf (" Size: %ld MB in %d Sectors\n",
115 info->size >> 20, info->sector_count);
117 printf (" Sector Start Addresses:");
118 for (i = 0; i < info->sector_count; i++) {
122 printf (" %08lX%s", info->start[i],
123 info->protect[i] ? " (RO)" : " ");
132 /*-----------------------------------------------------------------------
135 int flash_erase (flash_info_t * info, int s_first, int s_last)
137 int flag, prot, sect;
140 if (info->flash_id == FLASH_UNKNOWN)
141 return ERR_UNKNOWN_FLASH_TYPE;
143 if ((s_first < 0) || (s_first > s_last)) {
147 if ((info->flash_id & FLASH_VENDMASK) !=
148 (INTEL_MANUFACT & FLASH_VENDMASK)) {
149 return ERR_UNKNOWN_FLASH_VENDOR;
153 for (sect = s_first; sect <= s_last; ++sect) {
154 if (info->protect[sect]) {
159 return ERR_PROTECTED;
162 * Disable interrupts which might cause a timeout
163 * here. Remember that our exception vectors are
164 * at address 0 in the flash, and we don't want a
165 * (ticker) exception to happen while the flash
166 * chip is in programming mode.
168 flag = disable_interrupts ();
170 /* Start erase on unprotected sectors */
171 for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
173 printf ("Erasing sector %2d ... ", sect);
175 /* arm simple, non interrupt dependent timer */
176 reset_timer_masked ();
178 if (info->protect[sect] == 0) { /* not protected */
179 vu_short *addr = (vu_short *) (info->start[sect]);
181 *addr = 0x20; /* erase setup */
182 *addr = 0xD0; /* erase confirm */
184 while ((*addr & 0x80) != 0x80) {
185 if (get_timer_masked () >
186 CFG_FLASH_ERASE_TOUT) {
187 *addr = 0xB0; /* suspend erase */
188 *addr = 0xFF; /* reset to read mode */
194 /* clear status register command */
196 /* reset to read mode */
202 printf ("User Interrupt!\n");
206 /* allow flash to settle - wait 10 ms */
207 udelay_masked (10000);
210 enable_interrupts ();
215 /*-----------------------------------------------------------------------
216 * Copy memory to flash
219 static int write_word (flash_info_t * info, ulong dest, ushort data)
221 vu_short *addr = (vu_short *) dest, val;
225 /* Check if Flash is (sufficiently) erased
227 if ((*addr & data) != data)
228 return ERR_NOT_ERASED;
231 * Disable interrupts which might cause a timeout
232 * here. Remember that our exception vectors are
233 * at address 0 in the flash, and we don't want a
234 * (ticker) exception to happen while the flash
235 * chip is in programming mode.
237 flag = disable_interrupts ();
239 /* clear status register command */
242 /* program set-up command */
245 /* latch address/data */
248 /* arm simple, non interrupt dependent timer */
249 reset_timer_masked ();
251 /* wait while polling the status register */
252 while (((val = *addr) & 0x80) != 0x80) {
253 if (get_timer_masked () > CFG_FLASH_WRITE_TOUT) {
255 /* suspend program command */
261 if (val & 0x1A) { /* check for error */
262 printf ("\nFlash write error %02x at address %08lx\n",
263 (int) val, (unsigned long) dest);
264 if (val & (1 << 3)) {
265 printf ("Voltage range error.\n");
269 if (val & (1 << 1)) {
270 printf ("Device protect error.\n");
274 if (val & (1 << 4)) {
275 printf ("Programming error.\n");
284 /* read array command */
288 enable_interrupts ();
293 /*-----------------------------------------------------------------------
294 * Copy memory to flash.
297 int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
304 wp = (addr & ~1); /* get lower word aligned address */
307 * handle unaligned start bytes
309 if ((l = addr - wp) != 0) {
311 for (i = 0, cp = wp; i < l; ++i, ++cp) {
312 data = (data >> 8) | (*(uchar *) cp << 8);
314 for (; i < 2 && cnt > 0; ++i) {
315 data = (data >> 8) | (*src++ << 8);
319 for (; cnt == 0 && i < 2; ++i, ++cp) {
320 data = (data >> 8) | (*(uchar *) cp << 8);
323 if ((rc = write_word (info, wp, data)) != 0) {
330 * handle word aligned part
333 data = *((vu_short *) src);
334 if ((rc = write_word (info, wp, data)) != 0) {
347 * handle unaligned tail bytes
350 for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
351 data = (data >> 8) | (*src++ << 8);
354 for (; i < 2; ++i, ++cp) {
355 data = (data >> 8) | (*(uchar *) cp << 8);
358 return write_word (info, wp, data);